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Finding the Fourth Proportional to 415,862.60, 623,793.90 and 166,723.40

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Solution

The fourth proportional to 415,862.60, 623,793.90 and 166,723.40 is: 250,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,862.60 : 623,793.90 = 166,723.40 : x
  2. Step 2: Convert to fraction form
    415,862.60/623,793.90 = 166,723.40/x
  3. Step 3: Cross multiply
    415,862.60x = 623,793.90 × 166,723.40
  4. Step 4: Simplify right side
    415,862.60x = 104,001,039,907.26
  5. Step 5: Solve for x
    x = 104,001,039,907.26/415,862.60
  6. Step 6: Final answer
    x = 250,085.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.